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6-170.3December, 2011
High-Efficiency Condensing Gas-Fired Separated Combustion Unit Heaters
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6-170.32
INTRODUCTION / TABLE OF CONTENTS
Table of Contents Page
Design Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
General Performance and Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Field Installed Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Downturn Hood Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Unit Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-11
Model Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
At 93% thermal efficiency for all model sizes, Modine’s Effinity93 condensing unit heater features the highest efficiency available in North America for commercial and industrial gas-fired unit heaters. This industry leading efficiency is a result of the coupling of our ConservicoreTM secondary heat exchanger technology with our robust tubular primary heat exchanger design. The ConservicoreTM technology features a secondary recuperative heat exchanger fabricated from AL29-4C® stainless steel. This material is superior to other lower grades of stainless steel and aluminum, resulting in outstanding ability to withstand the corrosive environment of condensing gas fired equipment.
Available in eight model sizes with input ranges from 85,000 to 310,000 Btu/Hr, Modine offers application flexibility unmatched in the industry. The separated combustion units draw combustion air from outside to ensure that the unit will always have plenty of fresh, clean air for combustion while increasing the overall heating efficiency. Venting material to be used is PVC, an extremely cost effective vent system.
This catalog describes the design benefits, construction features, performance data, unit selection procedure, and the optional and accessory devices available for the Modine Effinity93 Condensing Unit Heater, model PTC.
WARNING1. Do not locate ANY gas-fired unit in areas where chlorinated,
halogenated, or acidic vapors are present in the atmosphere.
2. Do not install in potentially explosive or flammable atmosphere laden with dust, sawdust, or similar airborne materials.
CAUTIONHeaters are designed for use in heating applications with ambient temperatures between 40°F and 80°F. Heaters should not be used in applications where the heated space temperature is below 40°F. The combination of low space and combustion air temperatures may result in condensate freezing in the secondary heat exchanger and/or condensate drain.
! !
As Modine Manufacturing Company has a continuous product improvement program, it reserves the right to change design and specifications without notice.® AL29-4C is a Registered Trademark of Allegheny Ludlum Corporation. TM Effinity93, Conservicore, and any combination of these names either together or with other words is trademarked by Modine Manufacturing Co.
Table 2.1 - Estimated Annual Fuel Cost Savings Using the Effinity93 Condensing Unit Heater
Figure 2.1 - U.S. Average Heat Load Hours Map
Estimated Annual Savings Against Other Equipment ➀ ➁
Gravity Vented Power VentedDesign Heat Load (Btu/Hr): 120,000 280,000 120,000 280,000
Annual Heat Load Hours
(refer to Figure 2.1)
500 $306 $713 $136 $318
1000 $611 $1,427 $273 $637
1500 $917 $2,140 $409 $955
2000 $1,223 $2,853 $546 $1,274
2500 $1,529 $3,567 $682 $1,592
3000 $1,834 $4,280 $819 $1,911
3500 $2,140 $4,993 $955 $2,229
➀ Based on a natural gas rate of $1.10/Therm. Actual realized savings can vary significantly based on a number of changing factors including, but not limited to, fuel prices, climate, building use or construction, etc.
➁ Compares 93% efficient against 65% seasonal efficient gravity vented and 78% seasonal efficient power vented.
Use 3500 for Alaska and Canada.
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6-170.3 3
DESIGN FEATURES
Feature
Cab
inet
and
Air
Mov
er
Aluminized steel cabinet (gauge indicated) 20 ga.
Baked-on polyester powder paint for durability and corrosion resistence •
Adjustable air-deflector blades •
Fans engineered for quiet operation •
Totally enclosed fan motors for maximum durability •
Fingerproof fan guard (standard on size 110 and smaller) O
Hea
t Ex
chan
ger
and
Bur
ner
93% thermally efficient •
Aluminized steel primary heat exchanger (409 stainless steel optional) •
Tubular heat exchanger for superior durability •
In-shot burner on each heat exchanger tube for reliable performance, ease of serviceability and low sound level on flame ignition/extinction
•
Modine ConservicoreTM technology on secondary recuperative heat exchanger with AL29-4C® stainless steel material as standard
•
Con
trols
ETL certification for residential (size 110 and smaller only), commercial, and industrial use in the US and Canada •
Factory-installed power exhauster •
Controls for natural gas (propane optional) •
Single stage gas controls •
High limit safety controls for both the heated air and flue gas temperature •
Condensate drain overflow switch to verify proper condensate drainage •
Differential pressure switch for proof of venting •
Direct spark ignition with continuous retry control system •
Contractor Convenience Package featuring a condensate pump convenience outlet, unit on/off switch, heater function status indicator lights, and external terminals for thermostat wiring
•
Gas control step down transformer with 24V gas controls •
Fan delay timer •
Table 3.1 - Standard Features and Factory Options ➀
➀ • = Standard, O = Option. See page 6 for Field Installed Accessories.
Figure 3.1 - Effinity93 (model PTC) Figure 3.2 - Modine ConservicoreTM Heat Exchanger
SECONDARY HEAT
EXCHANGER
PRIMARYHEAT
EXCHANGER
POWER EXHAUSTER
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DESIGN FEATURES
Figure 4.1 - Factory Mounted Standard Features
➆ Flame Roll Out Switch (size 110 and smaller only) (hidden)Flame roll out switches are mounted near the burners and will shut off the gas supply in the event of an unsafe flame roll out condition.
➇ Direct Spark IgniterProvides spark for direct ignition of the burners.
➈ High Limit Switches One limit control is mounted in the air stream and will shut
off the gas supply in the event of overheating. The other limit control is mounted on the power exhauster housing and will shut off the gas supply in the event of overheating flue gas temperatures.
➉ Condensate Drain Overflow Switch Shuts down gas controls if condensate is not properly
draining from the unit.
Gas Pipe Connection Easy access to factory installed gas pipe connection stubbed
to outside of unit casing.
Condensate Drain Connection Easy access to factory installed condensate drain pipe
connection stubbed to outside of unit casing.
Combustion Air Inlet Pipe ConnectionSimple connection for combustion air inlet piping.
Vent Pipe Connection Simple Fernco® rubber boot connection for PVC vent system.
Fan Guard Propeller units may be equiped with an optional finger proof fan
guard (standard on size 110 and smaller) for added protection. If ordered, the finger proof fan guard is installed at the factory in place of the standard fan guard.
Contractor Convenience Package External junction box features simple connection of supply
power wiring internally, thermostat wiring to terminals externally, an On/Off switch, a single 115V outlet for connection of an external condensate pump, and status indicator lights to display the operational state of the unit.
Horizontal Air Deflector Blades (hidden)Factory mounted on the discharge of the unit, the blades can be adjusted to provide horizontal (up and down) delivery control of the heated air. Vertical deflector blades are available as a field installed accessory.
➀ Power Exhauster All units are supplied with a round vent pipe and combustion
air inlet pipe connections.
➁ Pressure Switch An automatic reset vent pressure switch is supplied on all
units and is designed to prevent operation of the main burner in the event there is restricted venting of flue products. This restriction may occur due to an improper vent diameter, long vent runs, un-approved vent terminal, high winds, high negative pressure within space, etc. After the cause of the restriction has been corrected, the pressure switch will reset automatically.
➂ Control Step Down Transformer The control step down transformer is located in the electrical
junction box. The transformer is used to step down from 115V to 24V for the gas controls, fan delay relay, field supplied motor starter, etc. An additional field installed transformer is required if the supply voltage is 208V, 230V, 460V, or 575V. To determine the control transformer supplied as well as any required accessory transformers, refer to Table 5.2.
➃ Integrated Direct Spark Control Board The integrated direct spark ignition control combines all
furnace control functions. The integrated board provides digital control of the air mover, inducer, ignition, gas valve and flame sense as well as monitoring the safety circuit at all times. The board includes LED diagnostics for trouble shooting and a fused power supply. Ignition control is 100% shut-off with continuous retry.
➄ Flame Sensor Remote flame sensor verifies ignition of all burners,
monitors the flame signal and communicates with the integrated circuit board.
➅ Single Stage Gas ValveThe main gas valve is factory installed on the unit heater gas train. The main gas valve provides regulator, main gas, and manual shutoff functions. The valve is redundant and provides 100% shut off. Natural gas is Control Code 11, propane gas is Control Code 21.
14
15
16
17
12
13
11
➄
➀
➃
➉
➁ ➂
➈12
11
15
16
1314
➇
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GENERAL PERFORMANCE AND ELECTRICAL DATA
Table 5.1 - Propeller Unit Heater Model PTC General Performance Data
Table 5.2 - Electrical Selection Details - All Models
Table 5.3 - Model PTC Operating Electrical Data ➄
➀ Ratings shown are for elevations up to 2,000 ft. For elevations above 2,000 feet, ratings should be reduced at the rate of 4% for each 1,000 feet above sea level. (In Canada see rating plate.) Reduction of ratings requires use of a high altitude kit.
➁ Data taken at 65°F ambient and unit fired at full-rated input. Mounting height as measured from bottom of unit, and without deflector hoods.
➂ All motors used are produced, rated and tested by reputable manufacturers in accordance with NEMA standards and carry the standard warranty of both the motor manufacturer and Modine. All motors are totally enclosed and all single phase motors have built-in thermal overload protection.
Model Supply Voltage Phase Required Accessory
Transformer ➃Power & Gas Control Circuit
Transformer VoltagesFactory Installed
Transformer
PTC
115 1 none
115V/1ph 115 to 24V
2081 or 3
208V to 115V
230 230V to 115V
4603
460V to 115V
575 575V to 115V
➃ For accessory transformer sizing, refer to Table 5.3.
Amp draw data shown is operating amp draw at incoming power. For units that use a field installed accessory step-down transformer as noted, the amp draw shown is the primary side operating amp draw. For sizing of circuit protection for equipment with transformers, please refer to the National Electric Code.
Model PTC Sizes85 110 135 155/156 180 215 260 310
Btu/Hr Input 85,000 110,000 135,000 155,000 180,000 215,000 260,000 310,000
Btu/Hr Output 79,050 102,300 125,500 144,150 167,400 199,950 241,800 288,300
Condensate Production (Gal./Hr.) 0.5 0.7 1.0 1.1 1.3 1.6 1.9 2.3
Entering Airflow (CFM) @ 70°F 1650 1750 2160 2510/2600 3020 3865 4585 5400
Outlet Velocity (FPM) 619 668 719 835/862 676 699 831 765
Air Temp. Rise (°F) 44 54 54 53/51 51 48 49 49
Max. Mounting Height (Ft.) 13 13 14 17/18 15 17 20 19
Heat Throw (Ft.) @ Max. Mtg Ht 48 46 51 59/62 53 60 70 67
Motor Type PSC PSC PSC PSC PSC PSC PSC PSC
Motor HP 1/8 1/3 1/3 1/3 1/3 1/2 3/4 3/4
Motor RPM 1550 1075 1075 1075 1075 1075 1125 1125
Supply Voltage Power Code Model PTC Sizes
85 110 135 155/156 180 215 260 310
115V1 Phase 01 (115V)
Motor Amps 2.2 4.6 4.6 4.6 4.6 7.0 8.8 8.8
Total Amps 4.5 6.9 6.9 6.9 6.9 9.3 11.1 9.9
Transformer kVA n/a n/a n/a n/a n/a n/a n/a n/a
208V 1 or 3 Phase
01 (115V) with Transformer
208V Total Amps 2.49 3.81 3.81 3.81 3.81 5.14 6.14 5.47
Transformer kVA 1.0 1.0 1.0 1.0 1.0 1.5 1.5 1.5
230V 1 or 3 Phase
01 (115V) with Transformer
230V Total Amps 2.25 3.45 3.45 3.45 3.45 4.65 5.55 4.95
Transformer kVA 1.0 1.0 1.0 1.0 1.0 1.5 1.5 1.5
460V3 Phase
01 (115V) with Transformer
460V Total Amps 1.13 1.73 1.73 1.73 1.73 2.33 2.78 2.48
Transformer kVA 1.0 1.0 1.0 1.0 1.0 1.5 1.5 1.5
575V3 Phase
01 (115V) with Transformer
575V Total Amps 0.9 1.38 1.38 1.38 1.38 1.86 2.22 1.98
Transformer kVA 1.0 1.0 1.0 1.0 1.0 1.5 1.5 1.5
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ACCESSORIES
Table 6.1 - Field Installed Accessories
Table 6.2 - Field Installed Thermostats
Sing
le-S
tage
Roo
mTh
erm
osta
ts
Description
WHITE-RODGERS 1C20-101 - 1.2 amps @30VAC, 50° -90°F temperature range, 0.15 to 1.2 amps adjustable heat anticipator
WHITE-RODGERS 1C26-101 - Same as 1C20-101 above except adds Heat/Off/Cool and Fan On/Auto switches
HONEYWELL TH5220D1029 digital non-programmable room stat with switching - range 40-90°F
Figure 6.1 - Horizontal Concentric Vent Kit Figure 6.2 - Vertical Concentric Vent Kit
FROM UNIT VENTCONNECTION
TO UNIT COMBUSTION AIR INTAkE CONNECTION
CONCENTRIC VENT ADAPTER
INLET GUARD ASSEMBLY
PVCVENT TERMINAL
(ELBOW)
INLETTERMINAL
VENT TERMINALASSEMBLY
FROM UNIT VENT CONNECTION
TO UNIT COMBUSTION AIRINTAkE CONNECTION
CONCENTRIC VENT ADAPTER
Feature
Cab
inet
and
A
ir M
over
Vertical Deflector Blades - Allows directional discharge air control in the left and right directions.
Downward Air Deflector Hoods - Available in 30°, 60°, and 90° configurations these deflector hoods provide more focused air flow control. Refer to page 7 for further details.
Two-Point Suspension Kits - Converts from 4-point suspension to 2-point suspension.
Fingerproof Fan Guard - Ships installed on unit in place of standard guard (standard on size 110 and smaller).
Con
trols
Natural Gas to Propane Gas Conversion Kit - All required parts to convert a natural gas unit to propane gas.
Energy Saver Thermostats - Mounted high and independent of the room stat, this control turns on the unit heater fan if high temperatures are sensed, forcing the heated air down, reducing stratification and potentially gas usage. SPDT switch, 30°-100° range. 16 amp @ 120V. Honeywell T631A1113.
Single-Stage Room Thermostats - See Table 6.2 for details.
Stepdown Transformers - Used to operate units on 208V, 230V, 460V, or 575V supply voltage. Refer to Tables 5.2 and 5.3 for further selection details.
Con
dens
ate
Han
dlin
g
Condensate Pump - Used for high lift applications of up to 22’ - DiversiTech CP-22
Condensate Pump Suspension Kit - Used to suspend/support pump (DiversiTech CP-22) from heater.
Condensate Treatment - Controls slime growth in pump (DiversiTech CP-22) and downstream drain.
Condensate pH Neutralizing Kit - Reduces acidity of condensate.
Recharge Kit for pH Neutralizing Kit - Aggregate material to recharge the pH Neutralizing kit (once per year or every 2000 hours).
Vent
ing
Horizontal Concentric Vent Kit - Enables horizontal concentric venting. kit consists of one concentric adapter, one vent termination screen, and one inlet guard assembly (See Figure 6.1).
Vertical Concentric Vent Kit - Enables vertical concentric venting. kit consists of one concentric adaptor, one combustion air inlet cap, and two vent pipe terminal screens (See Figure 6.2).
Termination screens for horizontal or vertical, 2-pipe system terminals. Terminals are by others.
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PERFORMANCE DATA - DEFLECTOR HOODS
Figure 7.1 - 30°, 60°, & 90° Deflector Hoods
H
SS
MOUNTINGHEIGHT
X Y
YZ
ZX
60 DOWNTURN
30 DOWNTURN
Note:X = Feet from Heater to Start of Floor CoverageY = Feet to End of Floor CoverageZ = Feet to End of Throw
60
30
30 DOWNTURN60 DOWNTURN
Figure 7.2 - 30° & 60° Hood Throw/Floor Coverage
Figure 7.3 - 90° Hood Throw/Floor Coverage
30° HOOD 60° HOOD 90° HOOD
Table 7.1 - Deflector Hood Performance Data
Model Size
Airflow Temp Rise
Mounting Height
Blade Angle
30° Hood 60° Hood 90° Hood
X Y Z X Y Z S(CFM) (°F) (ft) (°) (ft) (ft) (ft) (ft) (ft) (ft) (ft)
85 1650 44
8 59 14 30 41 0 32 43 1710 49 12 29 39 0 29 40 16
12 39 11 26 37 0 26 36 1413 32 10 25 35 0 24 33 14
110 1750 54
8 57 13 29 39 0 30 41 16
10 47 11 27 37 0 28 38 15
12 35 10 25 34 0 24 33 13
13 28 9 23 32 0 22 30 13
135 2160 53
8 60 15 32 44 0 34 47 2410 52 13 31 42 0 32 44 2112 42 12 29 40 0 29 40 1914 30 10 26 36 0 25 34 18
155 2510 53
8 60 14 32 43 0 33 46 2310 51 13 30 42 0 31 43 2112 41 12 28 39 0 28 39 1914 29 10 25 35 0 24 33 1716 8 6 17 26 0 15 21 16
156 2600 51
8 60 19 41 56 0 43 60 2610 51 18 40 55 0 42 57 2312 41 17 38 53 0 40 55 2114 29 15 37 51 0 37 51 2016 8 14 34 48 0 34 47 18
180 3020 51
8 63 16 35 48 0 37 51 2610 55 15 34 46 0 35 48 2312 46 13 32 44 0 32 45 2114 36 12 29 41 0 29 40 20
215 3865 48
8 66 19 41 56 0 43 59 3210 60 18 40 54 0 42 57 2912 53 17 38 53 0 40 54 2614 46 15 36 50 0 37 51 2416 37 14 34 47 0 33 46 23
260 4585 49
8 69 22 45 62 0 48 66 3710 63 21 44 61 0 47 64 3312 57 19 43 59 0 45 62 3014 51 18 42 57 0 43 59 2816 44 17 40 55 0 40 55 2618 35 15 37 52 0 36 50 2520 25 13 33 47 0 31 43 24
310 5400 49
8 68 20 43 58 0 45 62 3410 61 19 42 57 0 44 60 31
12 55 18 40 55 0 42 58 2814 48 17 39 53 0 40 54 2616 40 15 37 51 0 36 50 2418 31 13 34 47 0 32 44 23
Note: Refer to Figures 7.1 through 7.3.
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UNIT SELECTION
Selection Example ConditionsSelect a unit heater to meet the following conditions:1. Heating output capacity = 166,000 Btu/Hr per design
engineer 2. Heat exchanger = 409 Stainless Steel3. Gas Type = Natural4. Gas Controls = Single Stage5. Supply Voltage: 460V/60Hz/3Ph6. Altitude: 1,000 feet
With the information listed above, the basic model, using the information in this catalog and the Model Nomenclature shown on page 11, can be selected as shown:
1. Determine the Model and Input Rating (MBH): Using the Heating output capacity, the Furnace Input Rating
is determined from Table 6.1. The closest model to 166,000 Btu/Hr output has an Btu/Hr Input rating of 180,000 Btu/Hr so the Furnace Input Rating = 180. The corresponding model for a 180 size, propeller, separated combustion unit heater is PTC. The model and size are a PTC180.
2. Determination of Heat Exchanger Material: From item #2 in the example, the Heat Exchanger required is
409 Stainless Steel. Thus, the Heat Exchanger Material = S from the Model Nomenclature on page 11.
3. Determine the Ignition Type: The Ignition Type = S from the Model Nomenclature on page11
4. Determine Power Code Required: Referring to Table 5.2, it can be seen that the supply
voltage from the example conditions is not available (460V). A transformer kit selected later in this example must be used. In this instance, from Table 5.2 select the 115V/60Hz/1Ph power code (PC) = 01 unit.
5. Determine the control type: From items #4 and #5 in the example conditions, the gas type
is Natural Gas and controls are Single Stage. From note ➅ on page 4, we are directed to use Control Code (CC) 11.
At this point we have a full model number of: PTC180SS01116. Determination of transformer: To operate a 115V/60Hz/1Ph unit on 460V/60Hz/3Ph supply
power a unit step down transformer must be selected. By referring to Table 5.2 we see that a 460V to 115V step down transformer is required. As noted in the footnote for Table 5.2, the size can be determined to be 1.0VA from Table 5.3.
7. Altitude: Since deration of gas fired unit heaters is only required for
units to be installed at 2,000 ft or greater, no high altitude kit is required.
Selection Example
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96-170.3
DIMENSIONAL DATA
Table 9.1 - Dimensions (inches)
Figure 9.1 - Dimensional Drawings - Model PTC
Table 9.2 - Clearances to Combustible MaterialsUnit Side Clearance To Recommended
Combustible Materials Service ClearanceTop and Bottom 6" 6"
Access Side 6" 18"
Non-Access Side 6" 18"
Rear 18" 18"
Vent Connector 6" 6"
ADJUSTABLELOUVERS
(4) 3/8"-16 MTG HOLES
CONDENSATE DRAIN3/4" PVC
GASCONN.
COMBUSTION AIR INLET
VENTOUTLET
FAN
KNOCKOUTS FOR SUPPLY POWER WIRING
CONDUIT ENTRANCE
ACCESSPANEL
B
C
R (APPROX.) D (OPENING)
E(OPENING)
I
J
KL
H
F
G
M
A Q (MINIMUM DISTANCE TO WALL)
3.56 14.90 N P
Models PTC 85 PTC110 PTC135 PTC155/156 PTC180 PTC 215 PTC260 PTC310A 35.53 35.53 35.53 35.53 42.53 42.53 42.53 42.53
B 20.31 20.31 23.06 23.06 25.81 31.31 31.31 39.56
C 22.05 22.05 22.05 22.05 22.05 22.05 22.05 22.05
D 22.52 22.52 22.52 22.52 29.52 29.52 29.52 29.52
E 18.42 18.42 21.18 21.18 23.93 29.43 29.43 37.68
F 4.50 4.50 4.50 4.50 4.50 4.50 4.50 4.50
G 7.98 7.98 7.98 7.98 7.98 7.47 7.47 8.12
H 10.27 10.27 10.18 10.18 10.36 9.86 9.86 9.79
I 1.32 1.32 2.15 2.15 1.73 1.63 1.63 1.88
J 6.73 6.73 8.09 8.09 9.47 6.72 6.72 10.84
K 8.74 8.74 8.45 8.45 9.82 12.58 12.58 16.19
L 12.13 12.13 12.95 13.45 14.92 17.58 17.58 22.19
M 3.86 3.86 3.48 3.98 3.98 3.72 3.72 4.62
N 1.54 1.54 1.54 1.54 3.97 3.97 3.97 3.97
P 22.03 22.03 22.03 22.03 26.60 26.60 26.60 26.60
Q 45.83 45.83 45.83 45.83 45.83 45.83 46.83 46.83
R 33.83 33.83 33.83 33.83 33.83 33.83 34.83 34.83
Combustion Air Inlet Pipe 3 3 3 4 4 4 4 6
Vent Outlet Pipe 3 3 3 4 4 4 4 4
Gas Connection 1/2 1/2 1/2 1/2 1/2 3/4 3/4 3/4
Fan Diameter 18 18 20 20 22 24 24 26
Approx. Shipping Weight (lbs.) 125 128 165 165 215 265 265 310
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10 6-170.3
SPECIFICATIONS - ALL MODELS
General
A. StandardsAll unit(s) shall include:
A.2. ETL design certification for use in both the US and Canada to the ANSI Z83.8 - latest revision, standard for “Gas Unit Heater and Gas-Fired Duct Furnaces” for safe operation, construction, and performance.
B. Mechanical ConfigurationB.3. Condensing furnace section with 93% minimum
efficiency provided by an indirect-fired tubular heat exchanger with individually fired tubes coupled to a secondary recuperative heat exchanger for maximum heat recovery.
C. Venting/Combustion Air ArrangementC.4. The unit shall be separated combustion. The venting
shall be a power exhausted arrangement with a separate combustion air intake pipe connection to allow for fresh combustion air from outside the conditioned space. The unit shall be tested to insure proper ignition when the unit is subjected to 40 mile per hour wind velocities. The unit shall also include a factory mounted differential pressure switch designed to prevent main burner ignition until positive venting has been proven.
Venting shall be Schedule 40 PVC. For Canadian installations, all vent pipe and components must be approved to ULC S636.
D. Unit CasingD.1. The unit heater(s) casing shall be constructed of not
less than 20 gauge aluminized steel with minimization of exposed fasteners.
D.2. All exterior casing parts casing parts shall be cleaned of all oils and a phosphate coating applied prior to painting. The exterior casing parts shall then be painted with an electrostatically applied baked-on gray-green polyester powder paint (7-mil thickness) for corrosion resistance.
D.3. The unit shall be furnished with horizontal air deflectors. The deflectors are adjustable to provide for horizontal directional airflow control (up or down).
E. Furnace SectionE.1.e. The primary heat exchanger(s) shall be made of
18 gauge aluminized steel (opt 409 stainless steel) tubes and headers. Each heat exchanger tube shall be individually and directly flame-fired. The heat exchanger tube shall be crimped to allow for thermal expansion and contraction. The flue collector box shall be made of 20 gauge AL29-4C stainless steel.
The thermal efficiency of the unit(s) shall be a minimum of 93% efficient for all air flow ranges through the use of a secondary recuperative heat exchanger. The secondary heat exchanger shall be constructed of AL29-4C stainless steel to withstand the corrosive environment of condensing gas fired equipment.
E.3.a. The burner(s) shall be in-shot type, directly firing each heat exchanger tube individually and is designed for good lighting characteristics without noise of extinction for both natural and propane gas.
E.5. The ignition controller(s) shall be 100% shut-off with continuous retry.
E.6. The gas pressure shall be between 6-7" W.C for natural gas (opt the gas pressure shall be 11-14" W.C. for propane gas).
E.7.a. The solid state ignition system shall directly light the gas by means of a direct spark igniter each time the thermostat calls for heat.
E.8. The unit gas controls shall be provided with the following:
E.8.d. Single-stage gas controls with a single-stage combination gas control, an ignition control, and a single-stage low voltage thermostat. The unit fires at 100% full fire based on a call for heat from a room thermostat.
E.9. An automatic reset high limit switch mounted in the air stream to shut off the gas supply in the event of overheating.
E.9.a. An automatic reset high limit switch mounted on the power exhauster housing to shut off the gas supply in the event of overheating flue gas temperatures.
E.9.b. A condensate drain line overflow switch that senses if the condensate line is clogged and shuts the unit heater down.
E.10. A time delay relay that delays the start of the air mover to allow the heat exchanger a warm-up period after a call for heat. The time delay relay shall also continue the air mover operation after the thermostat has been satisfied to remove any residual heat on the heat exchanger.
E.11. The unit shall be orificed for up to 2000' elevation above sea level (opt the unit shall be orificed for _____ elevation above sea level).
F. ElectricalF.1. All electrical components shall carry UL, ETL, or CSA
listing.F.2. Low voltage terminal board.
F.3. A single 115V to 24V step down transformer shall be provided for all unit controls.
G. Air MoverG.1. The motor horsepower shall be ____.
G.2. The motor shall be factory wired.
G.3. The motor shall be controlled by a time delay relay.
G.4. Propeller models shall meet the following requirements.
G.4.a. The motor type shall be Single-speed, totally enclosed (TE)
G.5.b. The motor shall be rated for 115V/60Hz/1Ph.
Note: Specifications below are extracted from a master gas-fired unit heater specification and therefore certain numbered sections have been intentionally omitted.
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116-170.3
H. MountingH.1. The unit shall be equipped with tapped holes to accept
3/8-16 threaded rod for suspension.
H.3. Units to have 4 suspension points.
J. AccessoriesThe following field installed accessory control devices shall be provided with the unit:
J.1. A 1-50 psi gas pressure regulator to reduce the inlet gas pressure for the operating controls.
J.2. A clear plastic thermostat guard with two keys for room thermostats.
J.4. Pipe Hanger Adapter kit to facilitate threaded pipe suspension.
J.7. Vertical Deflector kit to enables side distribution of airflow.
J.12. Propane conversion kit for converting natural gas units to propane gas.
J.18. 30° non-velocity generating downward air deflector hood constructed of 20 ga. cold rolled steel with baked-on gray-green polyester powder paint.
J.19. 60° non-velocity generating downward air deflector hood constructed of 20 ga. cold rolled steel with baked-on gray-green polyester powder paint.
J.20. 90° non-velocity generating downward air deflector hood constructed of 20 ga. cold rolled steel with baked-on gray-green polyester powder paint.
J21. A 208V to 115V step down shall be provided for operation of the 115V unit.
J.22. A 230V to 115V step down shall be provided for operation of the 115V unit.
J.23 A 460V to 115V step down shall be provided for operation of the 115V unit.
J.24. A 575V to 115V step down shall be provided for operation of the 115V unit.
J.29. A horizontal concentric vent kit shall be provided to allow the vent outlet and combustion air inlet pipes to penetrate the building wall through one opening.
J.30. A vertical concentric vent kit shall be provided to allow the vent outlet and combustion air inlet pipes to penetrate the building roof through one opening.
J.31. A 2-point suspension kit to convert the unit from 4-point mounting to 2-point mounting.
J.32. An Energy Saver Thermostat to be mounted high and independent of the room stat to turn on the unit heater fan if high temperatures are sensed, forcing the heated air down to reduce stratification and gas usage.
J.33. A condensate pump for high lift applications of up to 22’. Pump shall include indicator lights to show pump status, internal vibration isolation, a check valve, condensate treatment tablet dispenser, and alarm contacts to shut the unit heater down if the pump becomes inoperable.
J.34. A condensate pump suspension kit to suspend/support the pump (DiversiTech CP-22) from the unit heater.
J.35. Condensate treatment tablets to controls slime growth in pump (DiversiTech CP-22) and downstream drain.
J.36. A condensate pH neutralizing kit to reduce the acidity of condensate. Includes barbed inlet and outlet fittings, mounting brackets and an initial charge of neutralizing aggregate.
J.37. A recharge kit for pH neutralizing kit. Includes sufficient aggregate for a complete recharge of the neutralizing kit.
K. ThermostatsThe unit shall be provided with the following thermostat:
k.2. A single stage room thermostat with a 50°-90°F range.
k.3. A single stage room thermostat with a 50°-90°F range with Heat/Off/Cool and Fan On/Auto switching.
k.4. Honeywell TH5220D1029 digital non-programmable room stat with switching - range 40-90°F.
SPECIFICATIONS - ALL MODELS
Heat Exchanger TypeA - AluminizedS - Stainless Steel
Ignition TypeS - Direct Spark
Control Code Type (refer to page 4)11 - Natural gas, single
stage21 - Propane, single stage
Power Code (refer to page 5)01 - 115V/60Hz/1ph
PTC 215 A S 01 11
Separated Combustion Unit ConfigurationPTC - Propeller Unit, 135-310MBH
Figure 11.1 - Model Number Designations
MBH Input 85 - 85,000 Btu/hr input
110 - 110,000 Btu/hr input135 - 135,000 Btu/hr input
155/156 - 155,000 Btu/hr input 180 - 180,000 Btu/hr input215 - 215,000 Btu/hr input260 - 260,000 Btu/hr input310 - 310,000 Btu/hr input
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Products from Modine are designed to provide indoor air-comfort solutions
for commercial, institutional and industrial applications. Whatever your heating,
ventilating and cooling requirements, Modine has the product to satisfy your
needs, including:
• Gas-fired unit heaters
• Gas-fired duct furnaces
• Gas-fired high-intensity infrared heaters
• Gas-fired low-intensity infrared heaters
• Steam/hot water unit heaters
• Steam/hot water cabinet unit heaters
• Steam/hot water commercial fin tube radiation
• Oil-fired unit heaters
• Electric unit heaters
• Indoor gravity and power vented single and multiple duct furnace make-up
air units
• Indoor separated combustion single and multiple duct furnace make-up air units
• Outdoor single and multiple duct furnace make-up air units
• Direct-fired make-up air units
• R410 DX split system air conditioning and heat pump ceiling cassettes
• Chilled water ceiling cassettes
With burner capacities up to 7,862,000 Btu/hr and air-handling capacities
as high as 60,000 CFM, Modine products are compatible with every fuel
type, including:
• Natural or Propane Gas • Steam/Hot Water • Oil • Electric
Specific catalogs and computer-generated heat-loss calculations are available
for each product. Catalogs 75-136 and 75-137 provide details on all Modine
HVAC equipment.
Commercial Products GroupModine Manufacturing Company
1500 DeKoven Avenue
Racine, Wisconsin 53403-2552
Phone: 1.800.828.4328 (HEAT)
Fax: 1.800.204.6011
www.modinehvac.com
© Modine Manufacturing Company 2011
Litho in USA
The Modine brand has been the
industry standard since Arthur B.
Modine invented and patented
the first lightweight, suspended
hydronic unit heater in 1923.
No other manufacturer can
provide the combined application
flexibility, technical expertise and
fast delivery found at Modine.
Consult your local Modine
distributor for help in solving your
indoor air problems.
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